The PyPy standard interpreter compiled to C using
the <a href="http://codespeak.net/pypy/dist/pypy/doc/objspace-proxies.html#the-taint-object-space">taint object space</a>. Example (<a href="javascript:execute_snippet('pypy-c-taint', 0)">execute</a>):
<pre>%s</pre>
Now try hard getting to value of <i>x</i> :-)
